RegularGridTopology.h

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/******************************************************************************
*       SOFA, Simulation Open-Framework Architecture, version 1.0 beta 3      *
*                (c) 2006-2008 MGH, INRIA, USTL, UJF, CNRS                    *
*                                                                             *
* This library is free software; you can redistribute it and/or modify it     *
* under the terms of the GNU Lesser General Public License as published by    *
* the Free Software Foundation; either version 2.1 of the License, or (at     *
* your option) any later version.                                             *
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License *
* for more details.                                                           *
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* You should have received a copy of the GNU Lesser General Public License    *
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.          *
*******************************************************************************
*                               SOFA :: Modules                               *
*                                                                             *
* Authors: The SOFA Team and external contributors (see Authors.txt)          *
*                                                                             *
* Contact information: contact@sofa-framework.org                             *
******************************************************************************/
#ifndef SOFA_COMPONENT_TOPOLOGY_REGULARGRIDTOPOLOGY_H
#define SOFA_COMPONENT_TOPOLOGY_REGULARGRIDTOPOLOGY_H

#include <sofa/component/topology/GridTopology.h>
#include <sofa/defaulttype/Vec.h>

namespace sofa
{

namespace component
{

namespace topology
{

using namespace sofa::defaulttype;


class RegularGridTopology : public GridTopology
{
public:
    RegularGridTopology(int nx, int ny, int nz);
    RegularGridTopology();
    
    virtual void reinit()
    {    
      setPos(min.getValue()[0],max.getValue()[0],min.getValue()[1],max.getValue()[1],min.getValue()[2],max.getValue()[2]);

    }
    void parse(core::objectmodel::BaseObjectDescription* arg);

    void setP0(const Vector3& val) { p0 = val; }
    void setDx(const Vector3& val) { dx = val; inv_dx2 = 1/(dx*dx); }
    void setDy(const Vector3& val) { dy = val; inv_dy2 = 1/(dy*dy); }
    void setDz(const Vector3& val) { dz = val; inv_dz2 = 1/(dz*dz); }
    
    void setPos(SReal xmin, SReal xmax, SReal ymin, SReal ymax, SReal zmin, SReal zmax);
    
    
    const Vector3& getP0() const { return p0.getValue(); }
    const Vector3& getDx() const { return dx; }
    const Vector3& getDy() const { return dy; }
    const Vector3& getDz() const { return dz; }
    
    unsigned getIndex( int i, int j, int k ) const; 
    Vector3 getPoint(int i) const;
    Vector3 getPoint(int x, int y, int z) const;
    bool hasPos()  const{ return true; }
    double getPX(int i)  const { return getPoint(i)[0]; }
    double getPY(int i) const { return getPoint(i)[1]; }    
    double getPZ(int i) const { return getPoint(i)[2]; }
    

    unsigned getCubeIndex( int i, int j, int k ) const; 
    Vector3 getCubeCoordinate( int i ) const; 
    

    Vector3   getMin() const { return min.getValue();}
    Vector3   getMax() const { return max.getValue();}

    
    virtual int findCube(const Vector3& pos);
    int findHexa(const Vector3& pos) { return findCube(pos); }
    
    virtual int findNearestCube(const Vector3& pos);
    int findNearestHexa(const Vector3& pos) { return findNearestCube(pos); }
    
    virtual int findCube(const Vector3& pos, SReal& fx, SReal &fy, SReal &fz);
    int findHexa(const Vector3& pos, SReal& fx, SReal &fy, SReal &fz) { return findCube(pos, fx, fy, fz); }
    
    virtual int findNearestCube(const Vector3& pos, SReal& fx, SReal &fy, SReal &fz);
    int findNearestHexa(const Vector3& pos, SReal& fx, SReal &fy, SReal &fz) { return findNearestCube(pos, fx, fy, fz); }
    
protected:
    Data< Vector3 > min, max;
    Data< Vector3 > p0;
    Vector3 dx,dy,dz;
    SReal inv_dx2, inv_dy2, inv_dz2;
};

} // namespace topology

} // namespace component

} // namespace sofa

#endif